Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2004-09-16
ECONF C0406271:SUNT06,2004
Physics
High Energy Physics
High Energy Physics - Experiment
Invited talk at the XXIV Physics in Collisions Conference (PIC04), Boston, USA, June 2004, 14 pages, LaTeX, 7 eps figures. PSN
Scientific paper
Results by the BaBar and Belle experiments of the measurements $\sin 2\alpha$, $\sin 2\beta$ and $\sin (2\beta + \gamma)$ along with the CKM matrix elements $V_{cb}$ and $V_{ub}$ are presented. The BaBar and Belle experiments $b \to sc\bar{c}$ results for $\sin 2\beta$ are in good agreement with each other, comfortably establishing CP violation within B decays. However, there is a 3.5 standard deviation between this result and $\sin 2\beta$ measured by the Belle experiment using $B^0 \to \phi K^0_S$ decays. Belle also find evidence for CP violation through time dependent measurements of the decay $B^0 \to \pi^+ \pi^-$, whilst a tighter constraint has been placed on the unitarity angle $\alpha$ by BaBar, using time dependent studies of the decay $B^0 \to \rho^+\rho^-$ .
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